Kate Middleton, Baby Bump Debut at First Appearance Since Pregnancy Reveal!

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Kate Middleton stepped out in public on Tuesday for a good cause - and for the first time since announcing she is expecting her third child.

The Duchess of Cambridge joined husband Prince William, and brother-in-law, Prince Harry, to celebrate World Mental Health Day.

At a special Buckingham Palace reception, they honored those working in the mental health field and at their Heads Together campaign.

This initiative, headed by Kate, Harry and William, aims to reduce the stigma surrounding mental health issues in the UK and worldwide.

They did not discuss what Kate Middleton's baby gender and name, but her baby bump was ever-so-slightly visible, as you can see below!

1. Kate and William on World Mental Health Day

Kate and William on World Mental Health Day
Kate and William at an event celebrating World Mental Health Day - a cause they have long championed - on Tuesday, October 10, 2017.

2. Kate Middleton's Baby Bump

Kate Middleton's Baby Bump
Mingling at her first public event since announcing her pregnancy, Kate is beginning to show ... slightly.

3. Kate Middleton Baby Bump Sighting!

Kate Middleton Baby Bump Sighting!
Kind of, sort of! Maybe? It's hard to say but it's what we've got.

4. A Vision in Blue

A Vision in Blue
The Duchess, as always, stunned with her radiant appearance.

5. Kate at World Mental Health Day

Kate at World Mental Health Day
Kate certainly appeared to be in good spirits, having just come out of her first trimester.

6. Soon-to-Be Parents of Three

Soon-to-Be Parents of Three
Kate Middleton and William are all smiles ... they certainly have a lot of reasons to be!

7. Kate Middleton Baby Bump Action!

Kate Middleton Baby Bump Action!
Kate is due early next year, but she was focused on more pressing issues on this occasion.

8. Kate and Harry

Kate and Harry
The royal mom walked into The White Drawing Room with Harry, showing off just a hint of a baby bump.

9. What Kate Wore

What Kate Wore
The royal mom walked into The White Drawing Room with husband William and brother in law Harry in a pretty blue Temperley London dress.

10. Happy to Be There

Happy to Be There
The event marked Kate‘s first public outing since August 30, when she and the royal brothers marked the 20th anniversary of the death of Princess Diana.

11. On the Upswing

On the Upswing
As with her first two pregnancies, Kate has been suffering from Hyperemesis Gravidarum, an extreme form of morning sickness that forced her to cancel her public duties.

12. Doing Their Part

Doing Their Part
William, Kate and Harry were praised by those in the mental health community for their work to break down stigmas surrounding issues of anxiety, depression and more.

13. In Praise of Kate

In Praise of Kate
William thanked everyone for what they’d done and said it was Kate “who first realized that all three of us were working on mental health in our individual areas of focus. She had seen that at the core of adult issues like addiction and family breakdown, unresolved childhood mental health issues were often part of the problem.”

14. A Royal Round of Applause

A Royal Round of Applause
Writer and activist Fiona Millar told reporters that William touched upon shifting attitudes among younger generations on the subject of mental health. “He was saying about people in the Great War not wanting to talk about their emotional experiences, and then passing it on to their children ... the stiff upper lip, ‘Don’t talk about how we feel,’” said Millar. “To be perfectly honest, that is a bit of a trademark of the royal family. And it obviously has its place. But the fact that they came out and did talk so openly about their feelings was a real shock to a lot of people. They don’t expect the royals to do that.”

15. The Public Face of A Crucial Issue

The Public Face of A Crucial Issue
Philippa Creasy, who lost her husband Terry to suicide five years ago, says Kate, along with her husband and Harry, “undoubtedly” can take the issue of mental health forward: “They’re the only three who can do it. No one could change the conversation like they’ve done.”

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